Replace settings_views `ga_required` with `required_level`.
Replace settings_views `ga_required` with `required_level`.

Strangely, enabling plugins or reports did not require a user be
anything but authenticated, so `required_level` was added to those views
as well.

sheagcraig/sal,salopensource/sal,salopensource/sal,salopensource/sal,sheagcraig/sal,salopensource/sal,sheagcraig/sal,sheagcraig/sal